<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title></title>
</head>
<body>
  
<%   
Object welcome=request.getAttribute("welcome");
   if(welcome==null){ 
     request.setAttribute("msg","您还没有登录，请登录后查看");
     request.getRequestDispatcher("login.jsp").forward(request,response);         
    }
%>
  
  <span style="color:blue;">${welcome}</span><br>
</body>
</html>
